Dec 03 16:30:11.256 INFO testing chao-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 16:30:11.256 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/beta-1.31-5/1.30.1:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 03 16:30:11.672 INFO [stdout] 052d8a0927105eee4721617e49b7f5fd54c0d689dabac51bb64c748c8f7bd758
Dec 03 16:30:11.679 INFO running `"docker" "start" "-a" "052d8a0927105eee4721617e49b7f5fd54c0d689dabac51bb64c748c8f7bd758"`
Dec 03 16:30:12.778 INFO [stderr] usermod: no changes
Dec 03 16:30:12.919 INFO [stderr]    Compiling itertools v0.7.11
Dec 03 16:30:15.643 INFO [stderr]    Compiling libchao v0.1.0
Dec 03 16:30:17.267 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 16:30:17.267 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/libchao-0.1.0/src/lib.rs:1:1
Dec 03 16:30:17.267 INFO [stderr]   |
Dec 03 16:30:17.267 INFO [stderr] 1 | #![feature(slice_patterns)]
Dec 03 16:30:17.267 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 16:30:17.267 INFO [stderr] 
Dec 03 16:30:17.267 INFO [stderr] error: aborting due to previous error
Dec 03 16:30:17.267 INFO [stderr] 
Dec 03 16:30:17.267 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 16:30:17.267 INFO [stderr] error: Could not compile `libchao`.
Dec 03 16:30:17.267 INFO [stderr] 
Dec 03 16:30:17.267 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 16:30:17.267 INFO [stderr] su: No module specific data is present
Dec 03 16:30:18.293 INFO running `"docker" "inspect" "052d8a0927105eee4721617e49b7f5fd54c0d689dabac51bb64c748c8f7bd758"`
Dec 03 16:30:18.621 INFO running `"docker" "rm" "-f" "052d8a0927105eee4721617e49b7f5fd54c0d689dabac51bb64c748c8f7bd758"`
Dec 03 16:30:18.949 INFO [stdout] 052d8a0927105eee4721617e49b7f5fd54c0d689dabac51bb64c748c8f7bd758